WO2001073778A1

WO2001073778A1 - An optical disk with a pattern and its manufacturing methods

Info

Publication number: WO2001073778A1
Application number: PCT/CN2000/000067
Authority: WO
Inventors: Fai Man Siu
Original assignee: Goldsense Laser Av Production Limited
Priority date: 2000-03-29
Filing date: 2000-03-29
Publication date: 2001-10-04
Also published as: AU2000235495A1; CN1452770A

Abstract

There is provided an optical disk with a pattern. The optical disk includes firts substrate (4), on which there is a ring-shaped data recording area (3) and pits representative of data are arranged in the data recording area (3); first metal layer (5), which is plated on the top surface of the first substrate (4) and the lower surface of the first metal layer (5) at least covers the data recording area (3) in order to reflect the laser beam incident upon the data recording area (3) transmitted through the first substrate (4), and the means for forming the pattern on the surface of the optical disk. The means may be pits or tables which located in the data recording area (3) and formed patterned shape-variable.

Description

Patterned optical disc and its manufacturing method

Technical field

The invention relates to an optical disc recording medium and a manufacturing method thereof, and in particular to an optical disc with patterns or characters on its surface and a manufacturing method of such an optical disc. Background technique

Optical discs are mainly used for storing sounds, images and data. They are generally only circular in size and have an outer diameter of 120 mm or 80 mm. There are two main types of optical discs, namely CD discs (compact discs) and DVD discs (digital versatile discs).

According to various functions and recording formats, CD disks can be divided into CD-DA, CD-I, CD-Photo, CD_G, CD-ROM, CD-band XA, VCD, CD-R, CD-RW and other formats. DVD discs can also be divided into DVD-Video (video DVD), Li-Audio (audio blue), DVD-ROM, DVD-R, DVD-RW, DVD-RAM and other formats.

The conventional optical disc has such a layered structure that the bottom layer is a polycarbonate substrate, on which are sequentially a data recording layer, a metal thin film layer and a varnish layer. This optical disc is manufactured by the following process. First, make a circular substrate; press the pre-made die with stored data to press the circular substrate, and emboss the pits representing the data on the surface of the substrate; then plate the embossed substrate surface with A layer of metal film to reflect the laser beam; Finally, in order to protect the metal film and prevent oxidation, a layer of varnish is coated on the surface of the metal film and hardened with ultraviolet light.

Such conventional optical discs have no patterns or text on the surface (hereinafter collectively referred to as patterns). In order to create a pattern on one surface of the disc, it is common practice to print some simple patterns on the varnish layer for decoration, or to print some text for the description of the content of the disc. However, due to the limitation of the process, the patterns printed directly on the surface of the optical disc are relatively simple, unattractive and not exquisite.

Therefore, there is a simple process on the surface of the disc in the prior art The demand for producing exquisite patterns or texts on the screen expands the application range of optical discs. Summary of the invention

In order to meet the above requirements existing in the prior art, the first object of the present invention is to provide a novel structured optical disc with a pattern on it. The patterns on this optical disc can be made by a simple process, and are very delicate and beautiful. And if necessary, it is possible to make patterns on the data recording area without destroying the data.

The second object of the present invention is to provide a method for manufacturing the above-mentioned patterned optical disc, which produces a delicate pattern on the surface of the optical disc (even above the data recording area) through a simple process.

In order to achieve the above first object, the present invention provides an optical disc, including: a first substrate having an annular data recording area surrounding a central hole of the optical disc on its upper surface, and pits representing data are provided in the data recording area;

A first metal layer plated on the upper surface of the first substrate, the lower surface of which covers at least the data recording area for reflecting the laser beam incident on the data recording area through the first substrate; and

A device for presenting a pattern on the surface of an optical disc.

The above-mentioned means for presenting the pattern may be a pattern-shaped, pit or land of varying shapes located in the data recording area.

The above-mentioned device for presenting a pattern may also be a second metal sheet with a pattern engraved on the surface connected to the first metal layer.

The above-mentioned device for presenting a pattern may also be a thin film attached with a pattern printed on the upper surface of the first metal layer.

The above-mentioned device for presenting a pattern may also be a first metal layer having a sufficient thickness and having a pattern inscribed on its upper surface.

The above device for presenting a pattern may also be composed of the following components: A second substrate connected to the first metal layer and the first substrate;

A second metal sheet with a pattern engraved on it is connected to the second substrate. To achieve the above second object, the present invention provides a method for manufacturing a patterned optical disc, which is characterized by including the following steps:

Construct the first substrate;

Pressing the first substrate using a die with data and patterns, forming a ring-shaped data recording area around the central hole on its upper surface, forming a large number of data representative pits in the data recording area, and forming lands between adjacent pits Some of the pits and / or lands have a special shape without affecting the data represented, and the pits and / or lands with the special shape are combined into a pattern;

At least a first metal layer is plated on the data recording area for reflecting the laser beam incident on the data recording area through the first substrate and causing the pattern to appear.

The invention also provides a method for manufacturing a patterned optical disc, which is characterized by comprising the following steps:

Construct the first substrate;

Pressing the first substrate with a die with data, forming an annular data recording area around the central hole on its upper surface, and forming a large number of data-representing pits in the data recording area;

At least a first metal layer is plated on the data recording area for reflecting the laser beam incident on the data recording area through the first substrate;

Making a second metal foil;

Burn a pattern on the second metal foil;

The second metal foil is fixed to the first metal layer.

In the above method, the second metal foil may be first fixed to the first metal layer, and then the pattern may be recorded on the second metal foil.

The invention also provides a method for manufacturing a patterned optical disc, which is characterized by the following steps: Construct the first substrate;

Make a film;

Print a pattern on the film;

The film is pasted onto the first metal layer.

In the above method, the film may be pasted on the first metal layer before printing the pattern on the film.

Construct the first substrate;

Continue electroplating to increase the thickness of the first metal layer;

A pattern is carved on the surface of the first metal layer.

Construct the first substrate;

Pressing the first substrate with a die with data, forming an annular data recording area around the central hole on its upper surface, forming a large number of data representative pits in the data recording area, and forming lands between adjacent pits;

At least a first metal layer is plated on the data recording area for reflection through the first The laser beam incident on the data recording area of the substrate;

A laser beam is used to ablate the pattern on the surface of the first metal layer. According to the method of the present invention, exquisite patterns can be made on one surface or both surfaces of the optical disc, so the use range of the optical disc is greatly expanded, and many new products can be developed based on this. For example, exquisite greeting cards with CDs, business cards, security cards, product catalogs, etc.

In addition, if precious metals such as gold, silver, and platinum are used as the material of the first metal layer, since these metals are not easily oxidized, the varnish coating process and ultraviolet curing process widely used in the existing optical disc production process can be completely excluded. The production process of the optical disc is simplified, and the production efficiency is improved. At the same time, the produced optical discs or related products such as greeting cards, business cards, security cards, product catalogues with optical discs, etc. are more exquisite. Brief description of the drawings

The above and other features and advantages of the present invention will be more apparent through the detailed description of the best embodiment of the present invention in conjunction with the accompanying drawings.

Figure 1 is a top view of the patterned optical disc of the present invention;

2 is a cross-sectional view of the first embodiment of the patterned optical disc of the present invention; FIG. 3 is a cross-sectional view of the second embodiment of the patterned optical disc of the present invention; FIG. 4 is a third embodiment of the patterned optical disc of the present invention 5 is a cross-sectional view of a fourth embodiment of the patterned optical disc of the present invention; FIG. 6 is a cross-sectional view of the fifth embodiment of the patterned optical disc of the present invention. Best Mode of the Invention

The best mode of the present invention is described in detail below.

FIG. 1 is a top view of the patterned optical disc of the present invention. Reference numeral 1 is a center hole, and reference numeral 3 is a data recording area, which are formed on the first substrate ⁴ together. Data record The recording area 3 is an annular area surrounding the central hole 1. In the data recording area 3, according to different uses, a large number of sounds, images and data can be stored in the form of pits according to the corresponding recording format. The part between two adjacent pits is called a platform.

The recording format of the data recording area 3 can conform to any specifications of the related art on the recording format of the optical disc, so that the patterned optical disc of FIG. 1 is compatible with the conventional optical disc so that it can be played normally in the conventional optical disc player.

Of course, the recording format of the data recording area 3 may also conform to any other specifications concerning the recording format of the optical disc that may appear in the future. The different recording formats adopted by the data recording area 3 do not constitute a limitation on the present invention.

The first substrate 4 may have any two-dimensional shape. For example, the first substrate 4 may be a rectangle, an ellipse, a heart, a triangle, etc., or an irregular pattern. On the upper surface of the first substrate 4 and even on the upper surface of the data recording area 3, various patterns can be exhibited by means of a device for presenting patterns on the surface of the optical disc described later. The patterned optical disc thus constructed can be used for various purposes, such as business cards, security cards, calendars, promotional materials, greeting cards, product catalogs, etc. with CD or DVD functions. FIG. 1 shows an example in which the first substrate ⁴ is rectangular.

For example, if the patterned optical disc shown in FIG. 1 has the shape of a conventional optical disc, the first substrate ⁴ can be made circular, and the entire upper surface of the first substrate ⁴ can be used as the data recording area 3. The material of the first substrate ⁴ may be any suitable material in the prior art, for example, polycarbonate used for conventional optical disc substrates.

The diameter of the center hole 1 is generally 15 mm, and the outer diameter of the data recording area 3 is generally 48 mm to 120 mm. The various sizes given here are just to give the patterned optical disc a similar appearance to a conventional optical disc for playback in a conventional optical disc player. These dimensions do not constitute a limitation on the actual size of the center hole 1, the data recording area ^3, and the first substrate 4.

2 is a cross-sectional view of the first embodiment of the patterned optical disc of the present invention. Reference numeral 1 represents the center hole of the optical disk, reference numeral 3 represents the data recording area, reference numeral ⁴ represents the first substrate, and reference numeral 5 represents the first metal layer. The material of the first metal layer ⁵ can It is any metal, such as aluminum. In order to manufacture more exquisite optical discs, precious metals such as gold, silver or platinum can be used. Noble metals are not easily oxidized, so the varnish coating process and ultraviolet curing process widely used in the prior art can be eliminated.

The first metal layer 5 is plated on the upper surface of the first substrate 4. The first metal layer 5 may cover the entire upper surface of the first substrate 4, at least completely covering the data recording area 3. The first metal layer 5 above the data recording area 3 has a first thickness sufficient for the first metal layer 5 to reflect the laser beam incident on the data recording area 3 through the first substrate 4. For example, the first thickness may be around 50 nanometers.

The laser beam reflected by the pits and lands in the data recording area 3 is read by the optical head and decoded into data. The working method of the optical head is well known to those of ordinary skill in the art, and need not be described in detail.

In the prior art, the pits representing data in the data recording area have a prescribed shape and must meet certain technical specifications. For example, the average height of the pits is 200 angstroms, and the average length of the gaps or lands between the pits is 1.378 microns. In the prior art, the optical disk is made by pressing a substrate with a die. In the process of manufacturing the die, the linear velocity of the laser-etched die is an average of 1.1275 mm / sec. The inventor found through a lot of experiments that, within the range allowed by the technical specifications, slightly changing the shape of the pit or the shape of the table does not affect the data represented, but it can bring unexpected technical effects, that is, a large number of pits or shapes that change in shape The stage can be combined into a pattern on the macro.

Therefore, in order to create a pattern on the optical disc, especially a pattern on the data recording area 3, a certain number of pits or lands can be selected in the data recording area 3 according to the needs of the created pattern without destroying the In the case of representative data, slightly change their shape. In this way, macroscopically, pits or lands with varying shapes are combined into the produced pattern. This pattern appears against the monotonous background presented by conventional shaped pits or tables.

The pits or lands, which are combined into a pattern and changed in shape as described above, constitute an apparatus for presenting a pattern on the surface of an optical disc in the first embodiment of the present invention.

In the optical disc shown in FIG. 2, when the first metal layer 5 is electroplated to a certain thickness / CNOO / 00067

(E.g., ¹⁵⁰ nm), the pattern produced is clearly presented.

Before specifically manufacturing the optical disc shown in FIG. 2, a patterned pattern may be pre-manufactured. A special program is used to control the angle and power of the laser recording head, so that the pits recorded will change their shape slightly without destroying the data represented. The patterns recorded on the die differ from the patterns made on the optical disc only in that their convex shapes are complementary.

3 is a cross-sectional view of a second embodiment of the patterned optical disc of the present invention; each reference numeral in the figure has the same meaning as the corresponding reference numeral in FIG. 2. The difference is that the first metal layer 5 has a second thickness, which is five to ten times the first thickness shown in FIG. The second thickness makes it possible to inscribe a pattern with a laser on the upper surface of the first metal layer 5. The total thickness of the first substrate 4 and the first metal layer 5 in FIG. 3 is 0.5 to 1.4 mm.

The pattern may be recorded on the first metal layer 5 by any method applicable in the prior art, for example, laser welding, manual engraving, mold hot pressing, and electric etching.

4 is a cross-sectional view of a third embodiment of the patterned optical disc of the present invention; each reference numeral in the figure has the same meaning as the corresponding reference numeral in FIG. 2. As shown in FIG. ⁴ , on the upper surface of the first metal layer 5, a second metal foil ^{7 is provided} . The upper surface of the second metal foil 7 may be pre-pressed or inscribed with characters or patterns, and then the second metal foil 7 may be adhered to the first metal layer 5. ⁵至 1. ⁴毫米。 In Figure ⁴ , the total thickness of the first substrate ⁴ , the first metal layer 5 and the second metal foil ⁷ is 0.5 to ^1.4 mm.

Alternatively, the second metal foil ^{7 is} fixed to the first metal layer ⁵ first, and then the second metal foil 7 is engraved with a pattern.

As a modification of the third embodiment shown in FIG. 4, a thin film printed with a delicate pattern in advance may be pasted on the first metal layer ⁵ . Alternatively, the blank film is first adhered to the first metal layer ⁵ , and then the pattern is printed on the film.

5 and 6 are the fourth and fifth embodiments of the patterned optical disc of the present invention A cross-sectional view of FIG. 2 shows that an optical disc with a structure similar to FIG. 2 but not necessarily with a pattern is mounted on the second substrate 6. The material of the second substrate 6 may be the same as the first substrate 4.

In FIG. ⁵ , the second substrate 6 has a groove on the lower surface, and the first metal layer 5 and the first substrate 4 are fixed into the groove by means of bonding technology or ultrasonic welding technology. A second metal foil 7 is provided on the upper surface of the second substrate 6. The upper surface of the second metal foil 7 may be pre-pressed or inscribed with characters or patterns, and then the second metal foil 7 may be fixed to the upper surface of the second substrate 6 by using an adhesive technique or ultrasonic welding technique. Alternatively, the second metal foil 7 is fixed to the second substrate 6 first, and then the pattern is engraved on the second metal foil 7.

In Figure 5, the total thickness of the first substrate ⁴ and the first metal layer 5 is 0.5 to 1.4 mm, the total thickness of the second substrate 6 and the second metal sheet 7 is 1.0 to 3. 0 Mm.

In FIG. 6, the second substrate 6 has a through hole penetrating through its upper and lower surfaces, and the first metal layer 5 and the first substrate 4 are fixed into the through hole by means of bonding technology or ultrasonic welding technology. On the upper surface of the second substrate 6 and the upper surface of the first metal layer 5 exposed from the through hole, a second metal foil 7 is provided. The upper surface of the second metal foil 7 may be pre-pressed or inscribed with characters or patterns, and then the second metal foil ^{7 may be} fixed to the upper surface of the second substrate 6 and exposed from the through hole using an adhesive technique or ultrasonic welding technique The upper surface of the first metal layer ⁵ . Alternatively, the second metal foil 7 is first fixed to the upper surface of the second substrate ^{6 and the} upper surface of the first metal layer 5 exposed from the through hole, and then the second metal foil ⁷ is patterned.

In FIG. 6, the total thickness of the first substrate 4 and the first metal layer 5 or the thickness of the second substrate 6 is 0.5 to ^1.4 mm, the total of the second substrate ⁶ and the second metal sheet ⁷ 4 毫米。 Thickness is 0.5 to 1.4 mm.

In order to be able to play the patterned optical disc of the present invention in a conventional optical disc player, for the patterned optical disc shown in FIGS. 2 to 4, any point on the outer edge of the first substrate ⁴ and the center of the center hole 1 The distance between must be less than or equal to 0/00067

60 mm. For the patterned optical disc shown in FIGS. 5 to 6, the distance between any point on the outer edge of the second substrate 6 and the center of the center hole 1 must be less than or equal to 60 mm.

In addition, when the patterned optical discs shown in FIGS. 2 to 6 are irregularly shaped, in order to be able to play normally in a conventional optical disc player, it is also necessary to The center of the center hole 1 is about 40 mm, and a fixing device is provided, as shown by reference numeral 8 in FIGS. 2 to 6. The fixing device 8 may be at least two protrusions formed on the substrate (the first substrate 4 or the second substrate 6 according to the actual size), or may be at least two adhesive edges adhered to the substrate, Or a ring concentric with the central hole 1. Here, the shape and number of protrusions or glue edges do not limit the present invention. The protrusion may be formed integrally with the substrate when the substrate is manufactured, or may be formed separately.

Conventional disc players have the ability to read small discs with an outer diameter of so mm, because the disc player's tray has a specific recessed track at a diameter of 80 mm. When the patterned optical disc provided with the fixing device ⁸ shown in FIGS. ² to ^{6 is} loaded on the tray of a conventional optical disc player, the fixing device ⁸ will be engaged in a recessed track with a diameter of 80 mm in the tray. Thus, even if the patterned optical disc has an irregular shape, it can be rotated stably in the optical disc player.

The various methods for manufacturing the patterned optical disc are detailed below.

First, using injection molding technology, a first substrate ⁴ with a central hole 1 of a desired shape is manufactured. For example, if a business card with a CD or DVD function is manufactured, the first substrate 4 can be made the size of a business card. In order to be able to play in a conventional optical disc player, the first substrate ⁴ needs to be constructed such that the distance between any point on the outer edge and the center of the center hole 1 is less than or equal to 60 mm.

In this step, the pellets of the polycarbonate at a high temperature of ³⁵⁰ melted to flow smoothly press receiving cavities, injection molding. In order to accelerate the speed of cooling and hardening, water cooling method is used. Secondly, around the central hole 1 on the upper surface of the first substrate 4, a ring-shaped data recording area is pressed using a pre-made die with data and patterns, so that a large number of data-representing pits are formed in the data recording area 3. The pits are formed between adjacent pits, some of which have special shapes without affecting the data represented, and these pits and / or lands with special shapes are combined into a pattern.

The minimum outer diameter of the data recording area 3 is ⁴⁸ mm. In order to be able to play in a conventional optical disc player, the maximum outer diameter of the data recording area 3 is 120 mm.

Next, a metal (for example, aluminum, preferably a precious metal such as gold, silver, or platinum) is vacuum-evaporated or sputtered onto the upper surface of the first substrate ⁴ to form the first metal layer 5. The lower surface of the first metal layer 5 should cover at least the data recording area 3, and the first metal layer 5 has a first thickness sufficient to reflect the laser beam incident on the data recording area 3 through the first substrate 4, such as 50 Bo microns. The thickness of the first metal layer 5 can be increased to a second thickness, for example, nanometers, and the presented pattern will be clearer.

The above method needs to make a die with both data and patterns in advance. As a variant, it is possible to produce in a conventional manner a first substrate, using a die press having only data of the first substrate ^4, a ring-shaped data recording area around the center hole 3 is formed in an upper surface thereof, in A large number of data-representing pits are formed in the data recording area ³ , and lands are formed between adjacent pits; then a first metal layer 5 is plated on the data recording area ³ for reflection through the first substrate ^{4 to} enter the data recording Laser beam on zone 3.

Next, certain pits or mesas are selected to combine the selected pits or mesas into a pattern; then the first metal layer ⁵ above the selected pits or mesas is ablated with a laser beam.

Using this deformed method, a disc with a pattern can also be produced. To achieve the best effect, before the step of ablating the first metal layer with the laser beam, electroplating may be continued to increase the thickness of the first metal layer ⁵ .

The patterned optical disc shown in Figure 3 can be produced by the following method: Construct the first substrate 4;

Press the first substrate 4 with a die with data to form a ring-shaped data recording area 3 around the central hole 1 on its upper surface, and a large number of data representative pits are formed in the data recording area 3;

At least a metal layer 5 is plated on the data recording area 3 for reflecting the laser beam incident on the data recording area 3 through the first substrate 4;

Continue electroplating to increase the thickness of the first metal layer 5, for example to five to ten times the original thickness;

A pattern is carved on the upper surface of the first metal layer 5.

The patterned optical disc shown in Fig. 4 can be produced by the following methods. The first method includes the following steps:

Construct the first substrate 4;

Pressing the first substrate ⁴ by using a die with data, forming an annular data recording area ³ around the central hole 1 on its upper surface, and forming a large number of data pits in the data recording area ³ ;

At least a first metal layer 5 is plated on the data recording area 3 for reflecting the laser beam incident on the data recording area 3 through the first substrate 4;

Make the second metal sheet 7;

Burn a pattern on the second metal foil 7;

The second metal foil 7 is fixed to the first metal layer ⁵ .

The second method includes the following steps:

Construct the first substrate 4;

At least a first metal layer 5 is plated on the data recording area ³ for reflecting the laser beam incident on the data recording area 3 through the first substrate 4;

Making the second metal foil 7; Fix the second metal sheet 7 to the first metal layer 5;

A pattern is carved on the upper surface of the second metal foil 7.

The third method includes the following steps:

Construct the first substrate 4;

Pressing the first substrate 4 with a die with data, forming a ring-shaped data recording area 3 around the central hole 1 on its upper surface, and forming a large number of data pits in the data recording area 3;

Make a film;

Print a pattern on the film;

The film is pasted onto the first metal layer 5.

The fourth method includes the following steps:

Construct the first substrate 4;

Pressing the first substrate ⁴ with a die with data, forming a ring-shaped data recording area ³ around the central hole 1 on its upper surface, and forming a large number of data representative pits in the data recording area 3;

At least a first metal layer ⁵ is plated on the data recording area ³ for reflecting the laser beam incident on the data recording area 3 through the first substrate 4;

Make a film;

Paste the film onto the first metal layer 5;

A pattern is printed on the surface of the film.

The method of manufacturing the patterned optical disk shown in FIG. 5 will be described in detail below.

First, make an optical disc with a smaller size without a pattern.

Secondly, the second substrate 6 with a return groove of a desired shape is manufactured by injection molding technology, and the groove is large enough to accommodate the small-sized optical disk produced above.

For example, if you make a business card with CD or DVD function, you can make the second substrate ^{6 the} size of a business card. Of course, the small-sized discs made above must have a 0 67 Smaller size of business card.

In order to be able to play in a conventional optical disc player, the second substrate 6 needs to be constructed so that the distance between any point on the outer edge and the center of the center hole 1 is less than or equal to 60 mm.

Next, a small-size optical disc is connected to the 1HJ groove of the second substrate 6 by means of bonding technology or ultrasonic welding technology.

Finally, a prefabricated precious metal plate on which the pattern is pressed or laser-engraved is adhered to the upper surface of the second substrate 6 as a second metal sheet as shown in FIG. 6 The manufacturing method of the patterned optical disc shown in 5 is similar. The difference is that a through hole penetrating the upper and lower surfaces of the second substrate 6 is provided, and a small-sized optical disc is bonded or ultrasonically welded into the through hole. The second metal foil 7 is not only bonded to the upper surface of the second substrate 6, but also bonded to the upper surface of the first metal layer 5 exposed from the through hole.

In order to make a patterned disc that can be played in a conventional disc player, in addition to meeting the aforementioned size requirements, when the patterned disc is irregularly shaped, it also needs to be on the lower surface of the disc used to contact the player tray At a distance of about 40 mm from the center of the center hole 1, a fixing device 8 is provided. According to different sizes and structures of the patterned optical disc, the fixing device ⁸ may be located on the lower surface of the first substrate ⁴ or the second substrate 6. The fixing device ⁸ may be at least two protrusions formed on the lower surface of the substrate, or may be at least two rubber edges bonded to the lower surface of the substrate, or a ring concentric with the central hole 1. If the fixing device ⁸ is convex, it is only necessary to slightly modify the injection mold used when manufacturing the substrate.

Although the best embodiments of the present invention have been described in detail above with reference to the accompanying drawings, those skilled in the art can make various modifications and changes without departing from the scope and essence of the present invention. Therefore, the scope of the present invention is limited only by the claims.

Claims

Rights request

1. An optical disc, comprising:

The first substrate (4) has on its upper surface a ring-shaped data recording area (3) surrounding the center hole (1) of the optical disc, and the data recording area (3) is provided with pits representing data;

The first metal layer (5) plated on the upper surface of the first substrate (4), the lower surface of which covers at least the data recording area (3), and is used to reflect through the first substrate (4) and enter the data recording area ( 3) a laser beam on the;

The optical disc further includes:

A device for rendering a pattern on the surface of an optical disc.

2. The optical disc according to claim 1, characterized in that said means for presenting a pattern is a pit or a stage of varying shapes combined into a pattern.

3. The optical disc according to claim 1, characterized in that said means for presenting a pattern is a second metal sheet (7) connected to the upper surface of the first metal layer ( ⁵ ) and having a pattern recorded thereon.

4. An optical disc according to claim 1, characterized in that said means for presenting a pattern is a film connected to the upper surface of the first metal layer (5) and having a pattern printed thereon.

The optical disc according to claim 1, characterized in that: said means for presenting a pattern is a first metal layer (5) having a sufficient thickness and having a pattern recorded on its upper surface.

6. The optical disc according to claim 1, wherein the means for presenting a pattern comprises:

A second substrate (6) connected to the first metal layer (5) and the first substrate ( ⁴ );

A second metal sheet (7) connected to the second substrate (6) and having a pattern recorded thereon.

7. An optical disc according to claim 6, characterized in that:

The second substrate (6) has a groove on the lower surface, and the first metal layer (5) and the first substrate (4) are connected into the groove.

8. An optical disc according to claim 6, characterized in that:

The second substrate (6) has a through hole penetrating the upper and lower surfaces thereof, and the first metal layer (5) and the first substrate (4) are connected into the through hole; and

The second metal foil (7) is also connected to the upper surface of the first metal layer (5) exposed from the through hole.

9. An optical disc according to claim 1, characterized in that the outer edges of the first substrate (4) form a circle.

10. An optical disc according to claim 1, characterized in that the outer edge of the first substrate (4) forms a rectangle.

11. An optical disc according to claim 1, characterized in that the outer edge of the first substrate (4) forms an irregular pattern.

The optical disc according to any one of claims 9 to 11, characterized in that the distance between any point on the outer edge of the first substrate ( ⁴ ) and the center of the center hole (1) is less than or equal to 60 mm.

13. The optical disc according to claim 12, characterized in that the optical disc has a fixing device (8) on the lower surface in contact with the player tray at a distance of about 40 mm from the center of the center hole (1).

The optical disk according to claim 13, wherein the fixing means is at least two protrusions.

15. An optical disc according to claim 14, characterized in that said at least two protrusions are formed together with the first substrate ( ⁴ ) by injection molding technology.

16. An optical disc according to claim 13, characterized in that the fixing means are at least two glue edges bonded to the first substrate ( ⁴ ).

17. Optical disk according to claim 13, characterized in that the fixing means is a ring concentric with the central hole (1).

18. An optical disc according to claim 6, characterized in that the outer edge of the second substrate (6) forms a circle.

19. An optical disc according to claim 6, characterized in that the outer edge of the second substrate (6) forms a rectangle.

20. An optical disc according to claim 6, characterized in that the outer edge of the second substrate (6) forms an irregular pattern.

21. The optical disc according to any one of claims 18 to 20, characterized in that the distance between any point on the outer edge of the second substrate (6) and the center of the center hole (1) is less than or equal to 60 mm.

22. An optical disc according to claim 21, characterized in that said optical disc has a fixing device (8) on the lower surface in contact with the player tray at a distance of about 40 mm from the center of the circle of the center hole (1).

An optical disk according to claim 22, wherein the fixing means is at least two protrusions.

24. An optical disc according to claim 23, characterized in that said at least two protrusions are formed together with the second substrate (6) using an injection molding technique.

25. An optical disk according to claim 22, characterized in that the fixing means are at least two glued edges bonded to the second substrate (6).

The optical disk according to claim 22, characterized in that the fixing means is a ring concentric with the central hole (1).

27. The optical disc 1 according to claim 8, characterized in that the outer diameter of the data recording area (3) in the range of Π 0 mm to ⁴⁸ mm.

28. The optical disc according to any one of claims 1 to 8, characterized in that a material of the first metal layer (5) is any one of gold, silver, and platinum.

29. The optical disc according to any one of claims 3, 6, 7, ⁸ wherein the material of the second metal foil ( ⁷ ) is any one of gold, silver, and platinum.

30. A method of making a patterned optical disc, comprising Next steps:

Constructing a first substrate (4);

The first substrate (4) is pressed by a die with data and patterns, and a ring-shaped data recording area (3) is formed around the central hole (1) on its upper surface, and a large number of representatives are formed in the data recording area (3) Pits of data, a table is formed between adjacent pits, and some of the pits and / or tables have a special shape without affecting the represented data, and the pits and / or tables with special shapes are combined into a pattern;

At least a data recording area (3) is plated with a first metal layer (5) for reflecting a laser beam incident on the data recording area (3) through the first substrate (4), and rendering the pattern to appear come out.

31. A method of manufacturing a patterned optical disc, comprising the following steps:

Constructing a first substrate (4);

A die with data is used to press a substrate ( ⁴ ) to form a ring-shaped data recording area ( ³ ) around the central hole (1) on its upper surface, and a large number of representative data are formed in the data recording area (3). pit;

At least a data recording area (3) is plated with a first metal layer ( ⁵ ) for reflecting a laser beam incident on the data recording area (3) through the first substrate (4);

Making a second metal sheet (7);

Burn a pattern on the second metal sheet (7);

The second metal sheet (7) is fixed on the first metal layer (5).

32. A method of manufacturing a patterned optical disc, comprising the following steps:

Constructing a first substrate (4);

The first substrate ( ⁴ ) is pressed by a die with data, and a ring-shaped data recording area ( ³ ) is formed on the upper surface surrounding the central hole (1), and a large number of representative data are formed in the data recording area (3). pit; At least a data recording area (3) is plated with a first metal layer (5) for reflecting a laser beam incident on the data recording area (3) through the first substrate (4);

Making a second metal sheet (7);

The second metal sheet (7) is fixed on the first metal layer (5); a pattern is recorded on the upper surface of the second metal sheet (7).

33. A method of manufacturing a patterned optical disc, comprising the following steps:

Constructing a first substrate (4);

The first substrate ( ⁴ ) is pressed by a die with data, and a ring-shaped data recording area ( ³ ) is formed on the upper surface surrounding the central hole (1), and a large number of representative data are formed in the data recording area (3). pit;

At least a data layer ( ⁵ ) is plated on the data recording area ( ³ ) for reflecting the laser beam incident on the data recording area ( ³ ) through the first substrate (4);

Make a film

Printing a pattern on the film;

The film is pasted onto the first metal layer ( ⁵ ).

34. A method of manufacturing a patterned optical disc, comprising the following steps:

Constructing a first substrate (4);

At least a data recording area (3) is plated with a first metal layer (5) for reflecting the laser beam incident on the data recording area (3) through the first substrate (4);

Make a film Pasting the film on the first metal layer (5);

A pattern is printed on the upper surface of the film.

35. A method of manufacturing a patterned optical disc, comprising the following steps:

Constructing a first substrate (4);

A die with data is used to press the first substrate (4) to form a ring-shaped data recording area (3) around the central hole (1) on its upper surface, and a large number of representative data are formed in the data recording area (3). pit;

At least a metal layer (5) is plated on the data recording area (3) for reflecting the laser light beam incident on the data recording area (3) through the first substrate (4);

Continue electroplating to increase the thickness of the first metal layer (5);

Burn a pattern on the top surface of the first metal layer (5).

36. A method of manufacturing a patterned optical disc, comprising the following steps:

Constructing a first substrate (4);

The first substrate (4) is pressed with a die with data, and a ring-shaped data recording area (3) is formed on the upper surface around the central hole (1), and a large number of representative data are formed in the data recording area (3). A pit is formed between adjacent pits; at least a first metal layer (5) is plated on the data recording area (3) for reflecting through the first substrate (4) and entering the data recording area (3) Laser beam on

A pattern is ablated on the surface of the first metal layer (5) by a laser beam.

37. The method according to claim 36, further comprising the following steps before the step of ablating a hafnium metal layer with a laser beam:

Continue plating to increase the thickness of the first metal layer (5).

The method according to any one of claims 30 to 37, characterized in that in the step of constructing the first substrate (4), the outer edge of the first substrate (4) is structured Made round.

39. The method according to any one of claims 30 to 37, characterized in that in the step of constructing the first substrate (4), the outer edge of the first substrate (4) is formed into a rectangle.

30 to 37 40. The method according to any one of the preceding claims, wherein the step of constructing a first substrate ^(4), the outer edge of a substrate configured Zi ⁽⁴⁾ in an irregular pattern.

41. The method according to any one of claims 30 to 37, characterized in that in the step of constructing the first substrate (4), the first substrate is configured such that any point on the outer edge and the center hole ( 1) The distance between the centers of the circles is less than or equal to 60 mm.

42. The method according to claim 41, further comprising the step of: on the lower surface of said optical disc in contact with the player tray, at a distance from the center hole

At about 40 mm from the center of the circle (1), a fixing device (8) is provided.

43. The method according to claim 42, characterized in that the fixing means are at least two protrusions.

44. The method according to claim 43, characterized in that said at least two protrusions are formed together with the first substrate ( ⁴ ) in the step of constructing the first substrate ( ⁴ ).

45. The method according to claim 42, characterized in that the fixing means are at least two glued edges bonded to the first substrate ( ⁴ ).

46. The method according to claim 42, characterized in that the fixing means is a ring concentric with the central hole (1).

47. The method according to any one of claims 30 to 37, characterized in that in the step of forming the data recording area (3), the data recording area (3) is formed to have an outside value in a range of 48 mm to 120 mm diameter.

48. The method according to any one of claims 30 to 37, characterized in that the material of the first metal layer (5) is any one of gold, silver, and platinum.

49. The method according to claim 31 or 32, characterized in that the material of the second metal flake (7) is any one of gold, silver, and platinum.